Home / 8,908.08-12,291.48-5,181.36

Finding the Fourth Proportional to 8,908.08, 12,291.48 and 5,181.36

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Solution

The fourth proportional to 8,908.08, 12,291.48 and 5,181.36 is: 7,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.08 : 12,291.48 = 5,181.36 : x
  2. Step 2: Convert to fraction form
    8,908.08/12,291.48 = 5,181.36/x
  3. Step 3: Cross multiply
    8,908.08x = 12,291.48 × 5,181.36
  4. Step 4: Simplify right side
    8,908.08x = 63,686,582.81
  5. Step 5: Solve for x
    x = 63,686,582.81/8,908.08
  6. Step 6: Final answer
    x = 7,149.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.